<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>

    .menu {
        width: 100%;
        display: flex;
        justify-content: space-between;
    }

    .menu-item {
        width: 100px;
        position: relative;
    }

    .shape-top {
        height: 20px;
        background: gray;

        transform: skewX(30deg);
    }

    .shape-down {
        height: 20px;
        background: gray;

        transform: skewX(-30deg);
    }

    .menu-content {
        height: 1rem;
        width: 50px;
        text-align: center;
        position: absolute;
        left: 0;
        top: 0;
        bottom: 0;
        right: 0;
        margin: auto;
    }


</style>
<body>

    <div class="menu">
        <div class="menu-item">
            <div class="shape-top"></div>
            <div class="shape-down"></div>
            <div class="menu-content">步骤一</div>
        </div>


        <div class="menu-item">
            <div class="shape-top"></div>
            <div class="shape-down"></div>
            <div class="menu-content">步骤一</div>
        </div>

        <div class="menu-item">
            <div class="shape-top"></div>
            <div class="shape-down"></div>
            <div class="menu-content">步骤一</div>
        </div>
    </div>
    
</body>

</html>